Definitions
1.noun(usually in the plural) A restraint fit over a human or animal appendage, such as a wrist, ankle or finger; normally used in pairs joined by a chain."The prisoner lay in shackles in his gloomy cell."
2.nounA U-shaped piece of metal secured with a pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism.
3.noun(usually in the plural) A restraint on one's action, activity, or progress.
4.nounA fetter-like band worn as an ornament.
5.nounA link for connecting railroad cars; a drawlink or draglink.
6.nounA length of cable or chain equal to 12 1/2 fathoms or 75 feet, or later to 15 fathoms.
7.nounStubble.